US4875692A - Conically-shaped corrugated seal - Google Patents

Conically-shaped corrugated seal Download PDF

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Publication number
US4875692A
US4875692A US07/110,431 US11043187A US4875692A US 4875692 A US4875692 A US 4875692A US 11043187 A US11043187 A US 11043187A US 4875692 A US4875692 A US 4875692A
Authority
US
United States
Prior art keywords
seal
frustro
conical
folds
exterior surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/110,431
Other languages
English (en)
Inventor
Michael J. Connor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boeing Co
Original Assignee
Boeing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boeing Co filed Critical Boeing Co
Priority to US07/110,431 priority Critical patent/US4875692A/en
Assigned to BOEING COMPANY, THE, 7755 MARGINAL WAY SOUTH, SEATTLE, WASHINGTON 98124 reassignment BOEING COMPANY, THE, 7755 MARGINAL WAY SOUTH, SEATTLE, WASHINGTON 98124 ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CONNOR, MICHAEL J.
Priority to JP63156630A priority patent/JPH01116385A/ja
Priority to CA000571013A priority patent/CA1305195C/fr
Priority to EP88110888A priority patent/EP0312702A3/fr
Priority to DE198888110888T priority patent/DE312702T1/de
Application granted granted Critical
Publication of US4875692A publication Critical patent/US4875692A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • F16J3/042—Fastening details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints; Joints allowing movement
    • F16L27/10—Adjustable joints; Joints allowing movement comprising a flexible connection only
    • F16L27/107—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve
    • F16L27/11—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/936—Composite
    • Y10S277/937—Glass particles or filament
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/944—Elastomer or plastic
    • Y10S277/945—Containing fluorine
    • Y10S277/946—PTFE

Definitions

  • the invention relates to seals, and in particular to corrugated seals for sealing two mating but not necessarily connected structures disposed for relative three-dimensional movement.
  • corrugated seals generally engage the opposing structures in parallel planes arranged perpendicular to the axis of the seal. This arrangement presents problelms in properly aligning the seal with the structure during assembly or reassembly after maintenance. Moreover, this arrangement permits misalignment to occur during use, particularly where the seal is used between structures that are relatively moveable in three dimensions.
  • the subject invention overcomes the problems and disadvantages of the prior art by providing a conically-shaped reinforced seal having a plurality of angled folds.
  • the seal is self-aligning with respet to the two structures it connects and is reinforced at the fold portions and at the portions of the seal which engage the two structures.
  • the invention comprises a seal for connecting first and second relatively moveable structures and for conducting fluid from a second structure to a first structure, the seal including a continuous wall having first and second opposed ends and defining an axial conduit, the wall being corrugated axially to define a plurality of circumferential folds, the corrugations being disposed at an angle to the axis of the conduit and defining at the first end a frustro-conical exterior surface and at the second end a frusto-conical interior surface, the angle of the corrugations sloping toward the first end.
  • FIG. 1 is a perspective view of the seal of the invention connecting a first and second structure.
  • FIG. 2 is a cross-sectional view of the seal taken along line II--II of FIG. 1.
  • FIG. 2A is a view similar to the view shown in FIG. 2 and shows the seal of the invention in a normal condition (not stretched or compressed) and not attached to the two structures.
  • FIG. 2B is a view similar to the view shown in FIG. 2 and shows the seal of the invention in a compressed condition.
  • FIG. 2C is a view similar to the view shown in FIG. 2 and shows the seal of the invention in a misaligned condition.
  • a seal 10 is provided for connecting a first structure 14 and a second structure 16 that are moveable with respect to one another.
  • the seal includes a continuous wall having a first end 18 and na second end 20 defining an axial conduit between the first structure 14 and the second structure 16.
  • the seal 10 conducts fluid from the second structure 16 to the first structure 14.
  • the seal material comprises alternating layers of fabric and silicone material.
  • the continuous wall is corrugated in the axial direction.
  • the corrugations define a plurality of circumferential folds 12.
  • the corrugations are disposed at an angle to the axis of the seal, thereby defining at the first end 18 a frustro-conical exterior surface 19 and defining at the second end 20 a frustro-conical interior surface 21.
  • the angle of the corrugations slopes toward the first end 18 of the seal 10.
  • the angle of the corrugations with respect to the direction of flow is approximately 30° to 60°.
  • the frusto-conical exterior surface 19 of the first end 18 is disposed for being sealingly received in a corresponding frustro-conical element 15 ofo the first structure 14 and the frustro-conical interior surface 21 at the second end 20 is disposed for sealingly receiving a corresponding frustro-conical element 17 of the second structure 16.
  • the second end 20 of the seal 10 having a frustro-conical interior surface 21 is fixed to the frustro-conical element 17 of the second structure 16.
  • the second end 20 is fixed to the second structure 16 by a conventional device, such as a flat top screw 22 disposed through an aperture in the second end and an aperture in the second structure 16.
  • the first end 18 of the seal 10 having a frustro-conical exterior surface 19 is not fixed to the corresponding frustro-conical element 15 of the first structure 14. Instead, the first end 18 is guidingly received by the corresponding frustro-conical element 15 of the first structure 14 to form a sealing engagement between the first end 18 of the seal and the first structure 14.
  • This form-fitting relationship between the first end of the seal and the first structure makes the seal self-aligning with respect to the first structure 14. Moreover, by this form-fitting relationship, the seal conducts fluid effectively without having to e permanently attached to both structures.
  • a generally rigid first plate 26 is fixed to the exterior surface 19 at the first end 18 of the seal 10.
  • This first plate 26 defines the sealing contact between the first end 18 of the seal and the corresponding frustro-conical element 15 of the first structure 14.
  • the first plate 26 also provides a rigid surface for aligning and guiding the first end 18 of the seal into sealing engagement with the first structure 14.
  • the first plate 26 also improves the wear characteristics of the seal.
  • the first plate 26 is a steel plate having a polytetrafluoroethylene coating for reducing the friction between the first plate 26 and the first structure 14 for further improving the wear characteristics of the seal.
  • the first plate 26 is vulcanized to the seal.
  • a generally rigid second plate 28 is provided at the second end 20 of the seal for reinforcing the second end of the seal.
  • the second plate 28 is fixed to an exterior surface 29 of the seal opposing the conically-shaped interior surface 21 at the second end 20 of the seal.
  • the second plate 28 is a metal plate that is vulcanized to he seal.
  • the second plate 28 creates a rigid surface at the second end 20 of the seal for supporting the fixing device, such as the screw 22, for fixing the second end 20 of the seal to the second structure 16.
  • reinforcing members 24 are arranged at each of the folds 12 for reinforcing the folds.
  • the reinforcing members comprise glass fiber reinforced nylon inserts that are injection molded parts which are inserted into each of the folds as the seal is constructed.
  • FIGS. 2A-2C show three different conditions of the seal 10.
  • FIG. 2A shows the normal condition of the seal, e.g., neither expanded, compressed, nor misaligned.
  • FIG. 2B shows the seal 10 in the compressed condition.
  • FIG. 2C shows the seal 10 in a misaligned condition.
  • the seal 10 is self-aligning during assembly and functional even when misaligned as shown in FIG. 2C.
  • first plate 26 attached to the first end 18 of the seal 10 helps guide the frustro-conically shaped first end of the seal into tight contact with the first structure 14, thereby minimizing misalignment.
  • the conical shape of the seal essentially guides the seal into its proper place in the seat on the first structure.
  • the metal plate in the second end of the seal essentially reinforces the seal and permits the seal to be fixed to the second, non-moving structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Sealing Devices (AREA)
  • Diaphragms And Bellows (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US07/110,431 1987-10-20 1987-10-20 Conically-shaped corrugated seal Expired - Fee Related US4875692A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/110,431 US4875692A (en) 1987-10-20 1987-10-20 Conically-shaped corrugated seal
JP63156630A JPH01116385A (ja) 1987-10-20 1988-06-24 シール装置
CA000571013A CA1305195C (fr) 1987-10-20 1988-07-04 Joint a ondulations de forme conique
EP88110888A EP0312702A3 (fr) 1987-10-20 1988-07-07 Joint conique ridé
DE198888110888T DE312702T1 (de) 1987-10-20 1988-07-07 Konische, gewellte dichtung.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/110,431 US4875692A (en) 1987-10-20 1987-10-20 Conically-shaped corrugated seal

Publications (1)

Publication Number Publication Date
US4875692A true US4875692A (en) 1989-10-24

Family

ID=22332969

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/110,431 Expired - Fee Related US4875692A (en) 1987-10-20 1987-10-20 Conically-shaped corrugated seal

Country Status (5)

Country Link
US (1) US4875692A (fr)
EP (1) EP0312702A3 (fr)
JP (1) JPH01116385A (fr)
CA (1) CA1305195C (fr)
DE (1) DE312702T1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6553639B2 (en) * 2000-07-18 2003-04-29 Rolls-Royce, Plc Method of manufacturing seals
US20090058012A1 (en) * 2007-08-31 2009-03-05 Trent Edward Walters Seal for a rotating laser transmitter
US20240068604A1 (en) * 2022-08-30 2024-02-29 Relativity Space, Inc. Additively manufactured bellows

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003411A3 (nl) * 1989-09-29 1992-03-17 Winckelmans Roger Flexibele slang.
DE10355211A1 (de) * 2003-11-26 2005-06-23 Linde Ag Dichtung für eine Rohrdurchführung

Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1397413A (en) * 1920-04-19 1921-11-15 Evans Powell Casing for universal joints
US2264413A (en) * 1939-12-21 1941-12-02 Siegerist Walter Seal
GB627120A (en) * 1948-01-23 1949-07-28 Kac Ltd Improvements in or relating to flexible couplings for pipes and the like
US2623798A (en) * 1947-12-09 1952-12-30 Robertshaw Fulton Controls Co Pressure sealing means
US2755643A (en) * 1950-07-05 1956-07-24 Wildhaber Ernest Flexible seal for universal joints
US2904356A (en) * 1955-08-03 1959-09-15 Kac Ltd Flexible couplings for pipes
US2920656A (en) * 1956-10-19 1960-01-12 Us Gasket Company Reinforced bellows
US3047026A (en) * 1959-09-23 1962-07-31 Acme Hamilton Mfg Corp Flexible hose
US3060069A (en) * 1959-10-23 1962-10-23 Fred E Sindars Insulating jacket for fluid lines and the like
US3139115A (en) * 1963-03-18 1964-06-30 Dore Co John L Lined vacuum bellows
US3151894A (en) * 1962-02-08 1964-10-06 Hanlon & Wilson Co Expansible connection capable of expanding and contracting radially and axially
US3250138A (en) * 1964-03-27 1966-05-10 Garlock Inc Automotive dust covers
US3368835A (en) * 1961-08-09 1968-02-13 Hackforth Bernhard Flexible couplings
US3409224A (en) * 1967-03-13 1968-11-05 Union Carbide Corp Flexible drinking tube
GB1150954A (en) * 1966-09-16 1969-05-07 Birfield Eng Ltd Improvements in or relating to Flexible Seals
DE1296900B (de) * 1966-05-17 1969-06-04 Matsushita Electric Ind Co Ltd Ausziehbarer und zusammenschiebbarer Kunststoffschlauch
US3550991A (en) * 1965-10-21 1970-12-29 Allis Chalmers Mfg Co Flexible metallic stress free sealing member and attached rod
DE1750604A1 (de) * 1968-05-17 1971-02-25 Moeller Werke Gmbh Faltenbalg od.dgl.
US3633945A (en) * 1970-01-06 1972-01-11 Resistoflex Corp High-pressure chemically resistant bellows
US3807195A (en) * 1971-05-11 1974-04-30 Gelenkwellenbau Gmbh Lubricant seals for torque-transmitting joints
US3901518A (en) * 1973-09-25 1975-08-26 Ishikawa Tekko Kk Dust seal cover for ball joint
US3908704A (en) * 1958-06-12 1975-09-30 Penntube Plastics Company Corrugated tubing
US3929165A (en) * 1971-12-13 1975-12-30 Ball Corp Tubular hinge assembly
US4029363A (en) * 1976-08-05 1977-06-14 Aluminum Company Of America Flexible junction in a system for fluidizing granular materials
DE2945234A1 (de) * 1979-11-09 1981-05-14 Leopold F. 7000 Stuttgart Schmid Gelenkschutzhuelle aus einem elastisch verformbaren werkstoff
GB2138525A (en) * 1983-04-22 1984-10-24 Beatrice Foods Co Pleated tubular connectors
US4570292A (en) * 1983-12-14 1986-02-18 Union Carbide Corporation Tubular core for a shirred casing article

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948065C2 (de) * 1979-11-29 1983-11-17 IWK Regler und Kompensatoren GmbH, 7513 Stutensee Faltenbalg
GB2170282B (en) * 1985-01-25 1987-11-18 Gen Electric Plc Flexible gaiters

Patent Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1397413A (en) * 1920-04-19 1921-11-15 Evans Powell Casing for universal joints
US2264413A (en) * 1939-12-21 1941-12-02 Siegerist Walter Seal
US2623798A (en) * 1947-12-09 1952-12-30 Robertshaw Fulton Controls Co Pressure sealing means
GB627120A (en) * 1948-01-23 1949-07-28 Kac Ltd Improvements in or relating to flexible couplings for pipes and the like
US2755643A (en) * 1950-07-05 1956-07-24 Wildhaber Ernest Flexible seal for universal joints
US2904356A (en) * 1955-08-03 1959-09-15 Kac Ltd Flexible couplings for pipes
US2920656A (en) * 1956-10-19 1960-01-12 Us Gasket Company Reinforced bellows
US3908704A (en) * 1958-06-12 1975-09-30 Penntube Plastics Company Corrugated tubing
US3047026A (en) * 1959-09-23 1962-07-31 Acme Hamilton Mfg Corp Flexible hose
US3060069A (en) * 1959-10-23 1962-10-23 Fred E Sindars Insulating jacket for fluid lines and the like
US3368835A (en) * 1961-08-09 1968-02-13 Hackforth Bernhard Flexible couplings
US3151894A (en) * 1962-02-08 1964-10-06 Hanlon & Wilson Co Expansible connection capable of expanding and contracting radially and axially
US3139115A (en) * 1963-03-18 1964-06-30 Dore Co John L Lined vacuum bellows
US3250138A (en) * 1964-03-27 1966-05-10 Garlock Inc Automotive dust covers
US3550991A (en) * 1965-10-21 1970-12-29 Allis Chalmers Mfg Co Flexible metallic stress free sealing member and attached rod
DE1296900B (de) * 1966-05-17 1969-06-04 Matsushita Electric Ind Co Ltd Ausziehbarer und zusammenschiebbarer Kunststoffschlauch
GB1150954A (en) * 1966-09-16 1969-05-07 Birfield Eng Ltd Improvements in or relating to Flexible Seals
US3409224A (en) * 1967-03-13 1968-11-05 Union Carbide Corp Flexible drinking tube
DE1750604A1 (de) * 1968-05-17 1971-02-25 Moeller Werke Gmbh Faltenbalg od.dgl.
US3633945A (en) * 1970-01-06 1972-01-11 Resistoflex Corp High-pressure chemically resistant bellows
US3807195A (en) * 1971-05-11 1974-04-30 Gelenkwellenbau Gmbh Lubricant seals for torque-transmitting joints
US3929165A (en) * 1971-12-13 1975-12-30 Ball Corp Tubular hinge assembly
US3901518A (en) * 1973-09-25 1975-08-26 Ishikawa Tekko Kk Dust seal cover for ball joint
US4029363A (en) * 1976-08-05 1977-06-14 Aluminum Company Of America Flexible junction in a system for fluidizing granular materials
DE2945234A1 (de) * 1979-11-09 1981-05-14 Leopold F. 7000 Stuttgart Schmid Gelenkschutzhuelle aus einem elastisch verformbaren werkstoff
GB2138525A (en) * 1983-04-22 1984-10-24 Beatrice Foods Co Pleated tubular connectors
US4570292A (en) * 1983-12-14 1986-02-18 Union Carbide Corporation Tubular core for a shirred casing article

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6553639B2 (en) * 2000-07-18 2003-04-29 Rolls-Royce, Plc Method of manufacturing seals
US20090058012A1 (en) * 2007-08-31 2009-03-05 Trent Edward Walters Seal for a rotating laser transmitter
US20240068604A1 (en) * 2022-08-30 2024-02-29 Relativity Space, Inc. Additively manufactured bellows

Also Published As

Publication number Publication date
DE312702T1 (de) 1989-11-16
EP0312702A2 (fr) 1989-04-26
EP0312702A3 (fr) 1990-01-31
CA1305195C (fr) 1992-07-14
JPH01116385A (ja) 1989-05-09

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AS Assignment

Owner name: BOEING COMPANY, THE, 7755 MARGINAL WAY SOUTH, SEAT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CONNOR, MICHAEL J.;REEL/FRAME:004810/0708

Effective date: 19871019

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FP Lapsed due to failure to pay maintenance fee

Effective date: 19931024

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362